Case for electronic tablet device



FIG. 1 is a front perspective view of a case for electronic tablet device showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left elevational view thereof; and,

FIG. 7 is a right elevational view thereof.

The features shown in broken lines in the drawing figures depict features that form no part of the claimed design. 

CLAIM The ornamental design for a case for electronic tablet device, as shown and described. 